Attachment for lathes



(N0 Model.)

W. SWABEL.

ATTACHMENT FOR LATHES. No. 437,945. Patented Oct. 7, 1890.

UNITED STATES PATENT OFFICE.

' WILLIAM SIVABELOF SAN FRANCISCO, ASSIGNOR OF ONE-HALF TO WALTER H. HOLMES, OF STOIVE, CALIFORNIA.

ATTACHMENT FOR LATH ES.

SPECIFICATION forming part of Letters Patent No. 437,945, dated October '7, 1890.

Application filed February 19, 1890. Serial No. 341,049. (No model.)

To all 2071,0111 it may concern: cured upon said frame, which is provided with Be it known that 1, WILLIAM SWABEL, a the T-shaped opening I citizen of the United States, residing at San The letter D indicates the tool-support, Francisco, in the county of San Francisco and which is provided with a circular base D, and State of California,haveinvented certain new depending from this baseis an oblong porand useful Improvements in Tool-Holding tion (1 which fits into theupper portion of Attachments for Lathes; and I do hereby dethe T-shaped opening of the tool-rest B.

clare the following to be a full, clear, and eX- The letter O-represents my improved toolact description of said invention, such as holder or turret, which is held upon the sup- 10 will enable others skilled in the art to which port D, so as to revolve loosely thereon. The it most nearly appertains to make, use, and base D of said support is provided with a practice the same. series of downwardly-projecting pins d,which My invention has relation to certain new fit into recesses 01', formed in the face of the and useful improvements in tool-holding attool-rest B, and thus serve to maintain the I 5 tachments for lathes; and it consists of the support in arigid position thereon. The unparts and details of construction, as will be der face of the turret or tool-holder is pro hereinafter more fully shown in the drawvided with a series of openings 0, within ings, described, and pointed out in the speci-' which the upper end of the catch eis adapted fication. to engage and hold the tool-holder in an ad- 20 The object of my invention consists in projust-ed position, so as to maintain the tool in viding a simple and inexpensive tool-holdworking position in the lathe. The upward ing attachment which shall allow of the ready movement of said catch is regulated by means converting of an ordinary engine-lathe into of the spiral spring E, which surrounds the a turret-lathe, which shall be so constructed same. The lower end of this bolt passes into 25 as to permit of .the reception and retention of an aperture in the shoulder formed in a rea number of tools at the same time, and of cessed or cut-away portion of the rest. tools varying in kind and size, thereby obvi- The periphery of the tool-holder C is proating the necessity of removing one and invided with a series of openings cc, both elonserting another tool in place thereof, as is the gated and circular, so as to permit the secur- 30 case with the ordinary lathe; and my inveuing therein of varying kinds of tools. The tion further consists in providing for the holder is so constructed as to permit of from ready revolving of the turret or tool-holder twelve to eighteen tools being securely fastand for the automatically locking thereof at ened therein; but it is obvious that any num any desired position, thereby allowing either ber may be arranged around its periphery.

5 of the tools to be brought into position for In order to permit of adjustment and securworking without removing the one previously ing of the tools adapted to fit within the elonused from the holder. gated openings, I provide the screw-threaded Referring to the drawings forming a part bolts f, which work through the screw-thread of this specification, in which similar letters ed openings f formed in the top of the holder.

0 of reference are used to denote correspond- The openings extend entirely through into ing parts throughout the entire specification the elongated opening 0, and said bolts pass and several views of the drawings, Figure 1 therethrough and bear against the surface of is a side elevation of a lathe provided with the tools. my improved turret or tool-holder; Fig. 2, a The revolving tool-holder is secured upon 45 detail view of the turret removed from the the supportD by means of the screw-threaded lathe or tool-rest; Fig. 3, a detail sectional bolt and nut g g at the upper end, as shown view of the turret and tool-rest, and Fig. 4 a more clearly in Fig. 3 of the drawings, and a top plan view of the turret or holder. washer at the lower end, which fits in the The letter A is used to indicate the frame lower portion of the T-shaped slot of the open- 50 of an ordinary lathe, and B the tool-rest seing of the tool-rest. I00

In Fig. 2 I have shown the tool-holder as being provided with the hand-key F, so as to permit of the ready revolving thereof.

It is obvious that by providing a holder in accordance with the above description the operator of the lathe is enabled to have under his control a multiple of tools by which to Work or operate upon the metal which requires different grade of work, thus saving the necessity of delays in taking out of one tool and replacing it by another, as is the result by the use of the ordinary engine-lathe.

I am aware that minor changes may be made in the construction herein shown and described without necessitating a departure from the nature and scope of my invention.

Having thus fully described my invention, what I claim as new, and desire to secure protectionin by Letters Patent of the United States, is

1. In a tool-holder attachment for lathes, the combinatiouof a tool-rest provided with recesses in its upper face and having one side cut away so as to form a side recess having an apertured seat or step, a springactuated bolt having its lower end passing in the aperture in the seat or step formed by said recessed portion, a tool-support provided with a circular base having a hole or aperture, and also provided upon its under side with depending pins adapted to fit in the realso provided with a T-shaped slot, of a toolholder support secured to said rest, having depending pins adapted to fit into the recesses formed in the top of the rest so as to prevent movement of said support, a vertical bolt passing through the tool-holder support,

having a nut upon its upper end and a washer upon its lower end, said washer working the slot of the tool-rest, and the tool-holderadapted to revolve upon the support, said holder being provided with a series of openiugs around its periphery, in which the tools are secured, substantially as set forth and described.

In testimony whereof I have hereunto aifixed my signature in the presence of Witnesses.

\VILLIAM SWABEL.

In presence of M. G. LOEFLER, F. N. BIGELOW. 

